Boric acid as a lubricating fuel additive – Simplified lab experiments to understand fuel consumption reduction in field test (original) (raw)

Bio-Lubricants Development: The Potential Use of Boron-Containing Additives

2012

This paper reports the use of boron-containing additives to improve the performance of a bio-based lubricating oil. The base oil was prepared from glycerol and oleic acid, was fortified with antifoaming agent, phenyl-α-naphtylamine, 4,4’-methylene-bis(2,6-ditert-butyl) phenol, and benzotriazol and has met the SAE 90 gear oil viscosity classification. The additives was prepared by reacting boric acid with monoethanolamine and was used in all formulations at 0.01 %wt of boron/kg. The test of extreme pressure property was carried out to examine the load-carrying capacity of the lubricating fluids using the four-ball extreme pressure tester according to ASTM D-2783. The oxidation & corrosion test was carried out using the bulk test at 150 o C for 24 h. Steel & copper specimens weight losses were used to estimate the lubricants corrosiveness. Meanwhile, kinematic viscosity increase at 40 o C was used to measure the effect of formulation to the oxidation stability of the oil. Experimental...

In Situ Lubrication with Boric Acid: Powder Delivery of an Environmentally Benign Solid Lubricant

Tribology Transactions, 2006

In situ deposition of boric acid in dry powder form is investigated as a potential environmentally benign solid lubricant for sliding metal contacts. Boric acid is widely used in industrial processes and agriculture, is not classified as a pollutant by EPA, and produces no serious illnesses or carcinogenic effects from exposure to solutions or aerosols. In this study, boric acid powder is aerosolized and entrained in a low-velocity jet of nitrogen gas, which is directed at a self-mated 302 SS sliding contact in a rotating pin-on-disc tribometer. The effects of powder flow rate, sliding speed, normal load, and track diameter on coefficient of friction and wear rate are investigated. Friction coefficients below µ = 0.1 can be consistently reached and maintained as long as the powder flow continues. Wear rates are reduced over 2 orders of magnitude.